The little black box was causing the over fueling.

I dunno what the BLACK BOX is doing to the fuel... but once out.. everything is fine!

Running now with an 1.7:1 AFPR... working very well with the 1.8 injectors for fuel.. but can't really tell once its on the dyno and cheak the A/F.

As I recall, the black box was pretty heavy-handed...I think it just fooled the ECU into thinking it was running cooler (like a 160° thermostat would) at all times which makes the car richer. It was pretty basic.

If you're only running a 1.7:1 AFPR now, and not the 12:1 Vortec, then you're running too lean at this point :)

I think his 1.7:1 AFPR is a rising rate, meaning that the ratio increases as boost increases. So its like your raising the rate that the fuel ratio raises at!? Seems repetative.

yeah, 1.7psi of fuel for 1psi of boost. = ( 1.7 x 5 ) + 50 = 58.5psi of fuel.

265cc injectors at 58.5psi of fuel can fuel 140rwhp, I'd say that's cutting it close.



are you trying to say 1.7:1, 3.4:2, 5.1:3, etc.?

Definately lean.